docs: def _setBitOn(x, bitNum):
      """Set bit 'bitNum' to True.
  
      Args:
          * x (int): The value before.
          * bitNum (int): The bit number that should be set to True.
  
      Returns:
          The value after setting the bit. This is an integer.
  
      For example:
          For x = 4 (dec) = 0100 (bin), setting bit number 0 results in 0101 (bin) = 5 (dec).
  
      """
      _checkInt(x, minvalue=0, description='input value')
      _checkInt(bitNum, minvalue=0, description='bitnumber')
  
      return x | (1 << bitNum)